remcos | 935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea

Analysis

max time kernel
150s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-10-2024 02:01

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General

Target

935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe
Size

944KB
MD5

b8d56a76c20f7112dad67dcf0ed7db76
SHA1

de67506c08d6fef79fff815e27cda68403980fc9
SHA256

935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea
SHA512

8211cd38a129df696ce6b5909990095c1762db549ca6c3781027c9394bb835812401237c669cdb72acb9941cf068fea1935719817bbe752a5a7df772293075ec
SSDEEP

12288:snC0mUwAF27PpvOvGrAl+5tbmzaCKqk0eua+ANHNAtFDQEa5g3M5JQCjXPpXylhd:KmUXFYpRrZ55jCKq/etMeDgc5PjN6cE

Score

10^/10

remcos mekus discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

mekus

dpm-sael.com:2017

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
meckus-ODY51K
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
5056	powershell.exe
2300	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3648 set thread context of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3992	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe
5056	powershell.exe
3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe
2300	powershell.exe
5056	powershell.exe
2300	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe
Token: SeDebugPrivilege	5056	powershell.exe
Token: SeDebugPrivilege	2300	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4508	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3648 wrote to memory of 5056	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	86
PID 3648 wrote to memory of 5056	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	86
PID 3648 wrote to memory of 5056	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	86
PID 3648 wrote to memory of 2300	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	88
PID 3648 wrote to memory of 2300	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	88
PID 3648 wrote to memory of 2300	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	88
PID 3648 wrote to memory of 3992	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	89
PID 3648 wrote to memory of 3992	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	89
PID 3648 wrote to memory of 3992	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	89
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92
PID 3648 wrote to memory of 4508	3648	935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe	92

C:\Users\Admin\AppData\Local\Temp\935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe
"C:\Users\Admin\AppData\Local\Temp\935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3648
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5056
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RhFlTiIjgELLJp.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2300
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RhFlTiIjgELLJp" /XML "C:\Users\Admin\AppData\Local\Temp\tmpACF9.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3992
- C:\Users\Admin\AppData\Local\Temp\935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe
  "C:\Users\Admin\AppData\Local\Temp\935a99d2fbb4053dadbfe9da227f4019d0807785bb193e56e719b7583f49b1ea.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4508

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
8e3264a85f39b4ec0c7397175d7a4299

SHA1
2bc2da29c0151d91c2e1ae220828fdd0b8c913c6

SHA256
d57bbf83404c872bc44ae9d607830dd898f2fde48eb8f79eae216247bd0ed856

SHA512
7e5b424a81dd6d92257baef4ebd6ffc308553e60d32a3a7b0f9b5e7fd74675610f2a180dd187ca524a40e1c7db402d2c64736d3bf01088dd2eddd45354460e22

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
6c69153a0231c8a21b361f5e3f864370

SHA1
db77a792b8a47eb455c4001d3452f7ebfaee0d68

SHA256
58cfff05192fa592cbb35a2307361d59e2cf22da2b7f169b9164d9e71428b0f2

SHA512
399a5c0df1fac4349c30edbeb2cfe3e158b4660bde13aa53702b26191717bba99ae84ef2eb536decbb24ebc620d00662e6dc7afa6bb4af3a04a84282fffdbc67

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w3mt33qu.u55.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpACF9.tmp

Filesize
1KB

MD5
810d6dfa51a7cc6f558e84bf4845eab7

SHA1
2140506effc8f12001851b53372fb51ea59608db

SHA256
fea2673466b93f138aa43b43488c92b6f05b5f5a31a0fcb9d6c9e5d1c79fd679

SHA512
59699185a24a3bfb1e75434a1d588c383f4a24b30f7c200729998fc2a78773f6211bfbdaa91eb3d11e976c6d8ab2d9e0d4dddba72386102af625c6778a39f5a4

Download Submit
memory/2300-72-0x0000000007010000-0x000000000702E000-memory.dmp

Filesize
120KB

Download
memory/2300-99-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/2300-61-0x0000000007030000-0x0000000007062000-memory.dmp

Filesize
200KB

Download
memory/2300-62-0x0000000074EA0000-0x0000000074EEC000-memory.dmp

Filesize
304KB

Download
memory/2300-94-0x0000000007500000-0x0000000007508000-memory.dmp

Filesize
32KB

Download
memory/2300-87-0x00000000071E0000-0x00000000071FA000-memory.dmp

Filesize
104KB

Download
memory/2300-35-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/2300-42-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/2300-86-0x0000000007820000-0x0000000007E9A000-memory.dmp

Filesize
6.5MB

Download
memory/3648-10-0x000000000A070000-0x000000000A10C000-memory.dmp

Filesize
624KB

Download
memory/3648-44-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3648-1-0x0000000000350000-0x0000000000442000-memory.dmp

Filesize
968KB

Download
memory/3648-2-0x00000000053A0000-0x0000000005944000-memory.dmp

Filesize
5.6MB

Download
memory/3648-3-0x0000000004E90000-0x0000000004F22000-memory.dmp

Filesize
584KB

Download
memory/3648-4-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3648-5-0x0000000004E40000-0x0000000004E4A000-memory.dmp

Filesize
40KB

Download
memory/3648-6-0x0000000005180000-0x0000000005198000-memory.dmp

Filesize
96KB

Download
memory/3648-0-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/3648-7-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/3648-8-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3648-9-0x00000000061E0000-0x00000000062A0000-memory.dmp

Filesize
768KB

Download
memory/4508-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-107-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-55-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-56-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-132-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-131-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-108-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-115-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-116-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-123-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-124-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4508-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/5056-18-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/5056-88-0x0000000007930000-0x000000000793A000-memory.dmp

Filesize
40KB

Download
memory/5056-89-0x0000000007B40000-0x0000000007BD6000-memory.dmp

Filesize
600KB

Download
memory/5056-90-0x0000000007AC0000-0x0000000007AD1000-memory.dmp

Filesize
68KB

Download
memory/5056-91-0x0000000007AF0000-0x0000000007AFE000-memory.dmp

Filesize
56KB

Download
memory/5056-92-0x0000000007B00000-0x0000000007B14000-memory.dmp

Filesize
80KB

Download
memory/5056-93-0x0000000007C00000-0x0000000007C1A000-memory.dmp

Filesize
104KB

Download
memory/5056-83-0x0000000007590000-0x0000000007633000-memory.dmp

Filesize
652KB

Download
memory/5056-100-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/5056-73-0x0000000074EA0000-0x0000000074EEC000-memory.dmp

Filesize
304KB

Download
memory/5056-60-0x00000000065A0000-0x00000000065EC000-memory.dmp

Filesize
304KB

Download
memory/5056-59-0x0000000006570000-0x000000000658E000-memory.dmp

Filesize
120KB

Download
memory/5056-40-0x0000000005FC0000-0x0000000006314000-memory.dmp

Filesize
3.3MB

Download
memory/5056-23-0x0000000005F50000-0x0000000005FB6000-memory.dmp

Filesize
408KB

Download
memory/5056-21-0x0000000005E40000-0x0000000005E62000-memory.dmp

Filesize
136KB

Download
memory/5056-22-0x0000000005EE0000-0x0000000005F46000-memory.dmp

Filesize
408KB

Download
memory/5056-19-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/5056-17-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/5056-16-0x00000000057E0000-0x0000000005E08000-memory.dmp

Filesize
6.2MB

Download
memory/5056-15-0x0000000005000000-0x0000000005036000-memory.dmp

Filesize
216KB

Download